public int count(Comparator<? super E> comparator, E e) { int cmp = comparator.compare(e, elem); if (cmp < 0) { return (left == null) ? 0 : left.count(comparator, e); } else if (cmp > 0) { return (right == null) ? 0 : right.count(comparator, e); } else { return elemCount; } }
@Override public int count(@Nullable Object element) { try { @SuppressWarnings("unchecked") E e = (E) element; AvlNode<E> root = rootReference.get(); if (!range.contains(e) || root == null) { return 0; } return root.count(comparator(), e); } catch (ClassCastException e) { return 0; } catch (NullPointerException e) { return 0; } }